1. Which of the following solvents would be the best choice to extract a polar o

Question

1. Which of the following solvents would be the best choice to extract a polar organic compound from an aqueous solution?

Acetonitrile                 Dimethylformamide                 Hexane                        Methylene Chloride

2. You are given a sample containing a hydrocarbon and an amine – both compounds are very insoluble in water and very soluble in diethyl ether. Describe how you could efficiently separate these two compounds using extraction methods; clearly explain why your procedure should give a good separation of the components (i.e., both compounds isolated in good yield and purity).

Explanation / Answer

Polarity Index (P´)

Acetonitrile  5.8              

Dimethylformamide     6.4          

Hexane       0.1                

Methylene Chloride     3.1

To extract a polar organic compound from an aqueous solution use a solvent which has high Polarity Index (P´)

Here we can use Dimethylformamide  .         

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